Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 01, 2015	Mar. 02, 2014
Current assets:
Cash and cash equivalents	$ 141,538	$ 133,150
Marketable securities (Note 2)	130,595us-gaap_MarketableSecuritiesCurrent	137,206us-gaap_MarketableSecuritiesCurrent
Accounts receivable, less allowance for doubtful accounts of $396 and $416, respectively	21,431us-gaap_AccountsReceivableNetCurrent	22,881us-gaap_AccountsReceivableNetCurrent
Inventories (Note 3)	14,439us-gaap_InventoryNet	13,871us-gaap_InventoryNet
Prepaid expenses and other current assets	5,256	4,132
Total current assets	313,259us-gaap_AssetsCurrent	311,240us-gaap_AssetsCurrent
Property, plant and equipment, net	26,537us-gaap_PropertyPlantAndEquipmentNet	29,674us-gaap_PropertyPlantAndEquipmentNet
Goodwill and other intangible assets (Note 3)	9,840	9,847
Restricted cash	0	25,000
Other assets (Note 4)	1,046us-gaap_OtherAssetsNoncurrent	1,332us-gaap_OtherAssetsNoncurrent
Total assets	350,682us-gaap_Assets	377,093us-gaap_Assets
Current liabilities:
Current portion of long-term debt (Note 11)	10,000us-gaap_LongTermDebtCurrent	10,000us-gaap_LongTermDebtCurrent
Accounts payable	6,882us-gaap_AccountsPayableCurrent	6,109us-gaap_AccountsPayableCurrent
Accrued liabilities (Note 3)	4,767us-gaap_AccruedLiabilitiesCurrent	5,139us-gaap_AccruedLiabilitiesCurrent
Income taxes payable	4,141us-gaap_AccruedIncomeTaxesCurrent	2,995us-gaap_AccruedIncomeTaxesCurrent
Current deferred income taxes	3,934us-gaap_DeferredTaxLiabilitiesCurrent	0us-gaap_DeferredTaxLiabilitiesCurrent
Total current liabilities	29,724us-gaap_LiabilitiesCurrent	24,243us-gaap_LiabilitiesCurrent
Long-term debt (Note 11)	84,000us-gaap_LongTermDebtNoncurrent	94,000us-gaap_LongTermDebtNoncurrent
Deferred income taxes (Note 4)	54,155	58,124
Other liabilities (Note 4)	1,204us-gaap_OtherLiabilitiesNoncurrent	183us-gaap_OtherLiabilitiesNoncurrent
Total liabilities	169,083us-gaap_Liabilities	176,550us-gaap_Liabilities
Commitments and contingencies (Notes 12 and 13)
Preferred stock, $1 par value per shares-authorized, 500,000 shares; issued, none	0us-gaap_PreferredStockValue	0us-gaap_PreferredStockValue
Common stock, $0.10 par value per shares-authorized, 60,000,000 shares; issued, 20,962,644 and 20,882,844 shares, respectively	2,096us-gaap_CommonStockValue	2,088us-gaap_CommonStockValue
Additional paid in capital	164,819us-gaap_AdditionalPaidInCapital	161,677us-gaap_AdditionalPaidInCapital
Retained earnings	16,048	35,651
Accumulated other comprehensive earnings	1,468	1,221
	184,431	200,637
Less treasury stock, at cost, 130,641 and 4,074 shares, respectively	(2,832)us-gaap_TreasuryStockValue	(94)us-gaap_TreasuryStockValue
Total shareholders' equity	181,599us-gaap_StockholdersEquity	200,543us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	$ 350,682	$ 377,093

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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